I solved the problem by using ppa-purge, as described on the xorg-edgers page:
To revert to official packages, you can install the ppa-purge package and run "sudo ppa-purge xorg-edgers". If you have driconf it is recommended to remove ~/.drirc when changing versions! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/775289 Title: E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
